Car hookup

Hi, I wanted to get a device to hook a Droid 2 up to a car, as a present. I was hoping to find one that connects to the speakers and charges the phone... The last time I was in the car (I think it's a 2005 acura tsx), I briefly looked around and could not find a 3.5mm aux. plug. Can someone tell me what other options there are? I'd appreciate it!

Note that almost none of the solutions address charging the phone. There isn't a single dock connector, as on iOS devices, that both charge and handle audio output. In many situations 2 connections are required: one for the audio and one for power.